Method and system for training an athletic motion by an individual

A method executed by a server, comprising:

• Storing, at the server, a pre-recorded video comprising first content;
• receiving, at the server, data transmitted from a client device, the data comprising (i) a single continuous recording of second content related to the first content and (ii) timing information based on (a) an initial time offset between when recording of the single continuous recording began and when playing of the pre-recorded video began for a first instance, and (b) for each subsequent instance that the pre-recorded video was played, a time delay to start the subsequent instance after completing a previous instance;
• generating, at the server, a rendered video comprising a rendered combination of the single continuous recording and multiple repetitions of the pre-recorded video corresponding to how many instances the pre-recorded video was played, such that, at a beginning of each repetition of the pre-recorded video in the rendered combination, the single continuous recording is at a time marker associated with that repetition;
• and
• sending, from the server to the client device, the rendered video.